Pyrope

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Deep blood-red in color, pyrope is the member of the garnet group whose hue is produced by iron and chromium. It frequently occurs as perfectly rounded, water-worn crystals known as anthill garnets, so called because ants excavate them to the surface in Arizona. Pyrope forms in peridotites, kimberlites, and high-pressure metamorphic rocks, and is recovered from Bohemia in the Czech Republic, South Africa, Australia, and the American Southwest. Its rich red rivals that of ruby, and the stone has been set in jewelry since the Middle Ages, most famously in the Bohemian garnet pieces of the eighteenth and nineteenth centuries. With a Mohs hardness of 7 to 7.5 and good durability, pyrope is well suited to everyday wear.

Physical & Optical Properties

Mohs Hardness 7.0 – 7.5
Specific Gravity 3.62 – 3.87
Refractive Index 1.72 – 1.756
Crystal System Isometric
Luster Vitreous
Cleavage Indistinct
Fracture Conchoidal
Color various
Dispersion 0.022
Pleochroism Absent

Mohs Hardness

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Pyrope
Mohs hardness of Pyrope shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Pyrope
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

About Pyrope

镁铝榴石是石榴石族中化学成分最接近纯端元的品种,化学式为Mg3Al2(Si3O12),呈深红色至紫红色,名称来自希腊语pyropos,意为火焰眼。镁铝榴石是最常见的红色石榴石之一,常与铁铝榴石形成类质同象混合晶体。纯正的深红色镁铝榴石常被称为波西米亚石榴石或蚁丘石榴石(产自非洲蚂蚁丘中),历史上波西米亚(今捷克)是最重要的产地,19世纪末至20世纪初的波西米亚石榴石首饰在欧洲贵族中极为流行。现代重要产地还包括南非(金伯利岩管)、坦桑尼亚和阿根廷。镁铝榴石是一月诞生石。

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Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Pyrope?
镁铝榴石是石榴石族中化学成分最接近纯端元的品种,化学式为Mg3Al2(Si3O12),呈深红色至紫红色,名称来自希腊语pyropos,意为火焰眼。镁铝榴石是最常见的红色石榴石之一,常与铁铝榴石形成类质同象混合晶体。纯正的深红色镁铝榴石常被称为波西米亚石榴石或蚁丘石榴石(产自非洲蚂蚁丘中),历史上波西米亚(今捷克)是最重要的产地,19世纪末至20世纪初的波西米亚石榴石首饰在欧洲贵族中极为流行。现代重要产地还包括南非(金伯利岩管)、坦桑尼亚和阿根廷。镁铝榴石是一月诞生石。
What is the hardness of Pyrope?
Pyrope has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Pyrope?
Pyrope is primarily Various.
How much does Pyrope cost?
Pyrope falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Pyrope?
Pyrope belongs to the Isometric crystal system.

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